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Biodegradable portable ba / Public Desgin

Biodegradable portable ba

With the cell phones become more and more powerful, the frequency of using a cell is adding constantly. It makes the batteries of your cell work hard. There's no need for you to carry such a heavy charger, this small battery can solve all your problems while it's low power.



QingDao, China

Yifei Fang,

Jinyao MA,